Brief description of components: Notes

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The following components supply an input signal for the power windows function:

Switch block in the driver's door
> up to 09/2005

All the power windows can be operated via the switch block in the driver's door. The switch block is connected via a LIN bus on the driver's door module TMFA (LIN = Local Interconnect Network).

>from 09/2005

The switch block is also connected to the body gateway module (KGM) via the LIN bus.

For more information, refer to DRIVER'S DOOR SWITCH BLOCK: E60, E61, E63, E64 .
Power-window switch in the front-passenger door, power-window switch in the rear doors
The passenger door and the rear doors (not on the E63, E64) are each equipped with their own power window switch.
Door contacts of all doors
The door contacts are analyzed to detect the status of the doors (OPEN or CLOSED). In the event of a faulty door contact, a closed door is assumed.
Hall sensors in the power-window motors
Two Hall sensors are integrated in the power window motor (not E63 or E64). The direction of rotation, speed and position can be determined through these.

The following control units are involved in the operation of the power windows:
Car Access System
The CAS control unit is the master control unit for the functioning of the power windows.

The commands are transmitted via the K CAN.
SGM: Safety and gateway module
> up to 09/2005

The Safety and gateway module (SGM) forms the gateway between K-CAN and byteflight .
TMFA and TMBF: Driver's door module and front-passenger door module
> up to 09/2005

The door modules are a component of the passive safety system ASE = Advanced Safety Electronics). The door modules (TMFA and TMBF) actuate the power windows in the front doors.

For more information, refer to DOOR MODULES: E60, E61, E63, E64 UP TO 09/2005: .
KGM: Body gateway module
> from 09/2005

The door modules and byteflight have been discontinued. The body gateway module (KGM) actuates the power windows in the front doors. Moreover, the KGM is the central gateway in the bus system.

For more information, refer to BODY GATEWAY MODULE: E60, E61, E63, E64 FROM 09/2005 .
KBM: Body basic module
The body basic module (KBM) controls the power windows in the rear doors (not on the E63). The body basic module is linked to the safety and gateway module (SGM) and to the CAS control unit by means of the K-CAN.

For more information, refer to BASIC BODY MODULE: E60, E61, E63, E64 .

The following actuators are controlled for the operation of the power windows:
Power-window motors
There is a DC motor in each door which drives the power windows.

The power window motors for the front doors are controlled by the door modules. The power window motors for the rear doors are controlled by the body basic module (KBM) (not on the E64).

For more information, refer to POWER WINDOW MOTORS: E60, E61, E63, E64 .